Time piece showing the days of the months



April 21, 1964 P. MATHYS 3,

TIME PIECE SHOWING THE DAYS OF THE MONTHS Filed Oct. 5, 1961 United States Patent 3,129,555 TIME PIECE SHOWING THE DAYS OF THE MONTHS Pierre Mathys, Villeret, Canton of Berne, Switzerland, as-

signor to Holding Favre-Leuba S.A., Zug, Switzerland,

a Swiss firm Filed Oct. 5, 1961, Ser. No. 143,228 Claims priority, application Switzerland Oct. 14, 1960 2 Claims. (Cl. 58-58) My invention has for its object a time-piece of the type showing the days of the month and including a flat dial provided with a gate underneath which a toothed wheel revolves. The toothed wheel or gear carries a scale of days of the month and is controlled by the hour wheel. In conventional Watches, the train of gears connecting the hour gear with ring gear carrying the scale of days of the month extends in two superposed planes which increases, at the periphery of the dial, the space separating the latter from the pillar plate, and consequently the height of the time-piece.

My invention has for its object to cut out this draW- back and it is characterized by the presence of a sloping gear operatively connecting a gear of the train wheels lying at a distance from the dial with the crown or ring gear extending directly underneath the latter.

In the accompanying drawing illustrating by way of example a preferred embodiment of my invention,

FIG. 1 is a partial cross-section of my improved timepiece while FIG. 2 shows a detail in plan view.

As illustrated, 1 designates the plate carrying the flat dial 2 while 3 designates the pipe rigidly coaxial with the center wheel on which pipe is fitted, with slight friction, the cannon wheel 4 which carries the minute hand and round which revolves the hour wheel or gear 5 connected with the cannon wheel by the conventional setting wheels or gears which are not illustrated. 6 designates the gate formed in the dial immediately underneath which is fitted a rotary crown or ring gear 7 carrying a scale of the days of the month from 1 to 31 angularly disposed thereon. 8 designates a half head case screw adapted to conventionally secure the movement inside the intermediate caging frame or inside the watch case.

The hour gear 5 which executes one revolution in 12 hours, controls a further gear 9 of which a pinion 10 meshes with the control gear 11. The latter is fitted along a slope over the plate 1 so as to connect operatively the pinion 10 lying at a distance from the dial with the crown Patented Apr. 21, 1964 or ring gear 7 which is, on the other hand, located immediately underneath the dial. The control gear 11, which executes one revolution per day, is provided with a tooth 12 which is longer than its other teeth and which is adapted to actuate once per day, the ring gear 7 carrying the scale of days of the month.

What I claim is:

1. In a watch, in combination, a plate support, an hour hand shaft, an hour hand gear operably connected to said shaft and rotatably driven, a gear driven directly by said hour gear and having a concentric pinion secured thereto and disposed adjacent said plate support, a Watch dial disposed overlying said gears and plate support and having an eccentric gate for viewing therein indicia representative of the days of the month, a ring gear having the last mentioned indicia disposed angularly spaced thereon, viewable through said gate individually and disposed for rotation between said plate support and said dial, said ring gear being disposed for rotation substantially in the same plane as said gear driven by said hour gear, a control gear driven from said hour hand gear rotatably one revolution in twenty-four hours and disposed for rotation on said plate support between said plate support and said dial, said control gear being disposed operably meshing said ring gear and said pinion of said gear driven by said hour gear, said control gear being disposed inclined toward said plate support and inclined away from said plane, said ring gear being disposed circumferentially of all of said gears and having internal teeth and said control gear having peripheral teeth for cooperating with said internal teeth of said ring gear rotating said ring gear once a day an angular distance suflicient to cause the indicia to indicate a next successive day.

2. In a watch according to claim 1, in which said hour gear, said gear driven directly by said hour gear and said ring gear are disposed substantially in a common plane.

References Cited in the file of this patent UNITED STATES PATENTS 1,142,554 Ditesheim June 8, 1915 2,580,458 Osterik Jan 1, 1952 2,650,467 Favre Sept. 1, 1953 3,082,594 Stamm et al. Mar. 26, 1963 FOREIGN PATENTS 343,314 Switzerland Dec. 15, 1959 543,889 Italy May 25, 1956 981,041 France Jan. 10, 1951 

1. IN A WATCH, IN COMBINATION, A PLATE SUPPORT, AN HOUR HAND SHAFT, AN HOUR HAND GEAR OPERABLY CONNECTED TO SAID SHAFT AND ROTATABLY DRIVEN, A GEAR DRIVEN DIRECTLY BY SAID HOUR GEAR AND HAVING A CONCENTRIC PINION SECURED THERETO AND DISPOSED ADJACENT SAID PLATE SUPPORT, A WATCH DIAL DISPOSED OVERLYING SAID GEARS AND PLATE SUPPORT AND HAVING AN ECCENTRIC GATE FOR VIEWING THEREIN INDICIA REPRESENTATIVE OF THE DAYS OF THE MONTH, A RING GEAR HAVING THE LAST MENTIONED INDICIA DISPOSED ANGULARLY SPACED THEREON, VIEWABLE THROUGH SAID GATE INDIVIDUALLY AND DISPOSED FOR ROTATION BETWEEN SAID PLATE SUPPORT AND SAID DIAL, SAID RING GEAR BEING DISPOSED FOR ROTATION SUBSTANTIALLY IN THE SAME PLANE AS SAID GEAR DRIVEN BY SAID HOUR GEAR, A CONTROL GEAR DRIVEN FROM SAID HOUR HAND GEAR ROTATABLY ONE 